Answer:
90km/h in m/s will be
90×1000m/3600s ( convert 1km/1h to 1000m/3600sec )
=> 25m/s
The answer is 39.2 m/s
We need the velocity of the rock as it reaches the ground, and it is its final velocity. Since it is the free fall, we also must take into consideration gravitational acceleration (a). Therefore, the formula for the final velocity (v2) is:
v2 = v1 + at
v2 - the final velocity
v1 - the initial velocity
a - gravitational acceleration
t - time
As you can see, the distance in this case is not relevant.
It is known:
v1 = 0 m/s (since it was dropped)
a = 9.8 m/s²
t = 4 s
Therefore, the velocity of the rock as it reaches the ground (v2) is:
v2 = 0 + 9.8 · 4 = 39.2 m/s
Question
Combine like terms to simplify the expression: -5.55 - 8.55c + 4.35c
Answer:
Step-by-step explanation:
Given: -5.55 - 8.55c + 4.35c
Required: Simplify
We start by performing arithmetic operation on like terms
-5.55 - 8.55c + 4.35c becomes
-5.55 + 4.20c
Then we simplify further by converting decimals to fraction
Simplify by dividing the numerator and denominator by 5
Bring out similar factors
Rearrange
Hence, the expression -5.55 - 8.55c + 4.35c is equivalent to
More than one triangle <span>exists with the given angle measures. So, this triangle is not equiangular, but has only 2 angles of equal measure.
Hope
this
helped</span>